> 1. When I query the table by ID, it performs index scan on each > partition. The result is only found in one partition, but I understand > why it needs to look in all of them. How much disk reading does it > involve? Is only the "head" of indexes for partitions that do not > include the row scanned, or are always whole indexes read? I would > like to know the general rule for index scans. If you're not including the partition criterion in most of your queries, you're probably partitioning on the wrong value. --Josh Berkus -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
